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Bukit Serumbu Summit, Peninjau

(The Wallace Trail) ** physical fitness is required if you wish to climb from Point B till Point D**

Duration : 0800 – 1700 hrs

Pick up from your city hotel. Enjoy an hour’s drive passing typical Borneo
country sights till a Bidayuh Village called Peninjau.

From the foothill, a slow & relatively easy trek brings you till Point B. The
climb gets steeper and harder from Point B to Point C and from Point C to
Point D. But the view definitely gets better!

The various types of flora you will see as you climb are truly fascinating.
The tallest flower in the world, the Amorphophallus is easily found here as
they flower all year round.

Have your packed lunch at the view point or underneath the giant boulder
– a pretty awesome sight!

Slowly make your way back to the foothill after lunch. Return to the city.
Drop off at your city hotel about 1700hrs.

About Bukit Serumbu :
* The hill is a single mass of porphyry diorite rock, igneous in origin. It stands on the northern edge of a meandering valley of
limestone karst, known as the “Bau limestone”. On the southern bank of this valley rises the Bungo range, composed primarily
of sandstone. The boulders are part of the hills crust which have broken off and taken their rounded shape through weathering.
Igneous rock weathers like egg-shells, peeling off layers over time, leaving rounded boulders. In the southern part of the hill,
parts of the base-rock are visible, yet to be broken off into loose boulders. These parts of the base-rock are spectacular, some
the size of a four storey shoplot! Exposed rockface is evident on the northeastern side, facing the two villages of Peninjau
Lama and Peninjau Baru.

* Alfred Russel Wallace , the British naturalist, explorer, geographer, anthropologist and biologist, who is best known for
independently proposing a theory of evolution due to natural selection, which prompted Charles Darwin to publish his own
theory. Considered the 19th century’s leading evolutionary thinkers as well as an expert on the geographical distribution of
animal species, Wallace is sometimes referred to as the ‘father of biogeography’.

* This extraordinary man was offered the use of the White Rajah – James Brooke’s bungalow ‘Peninjau’ on the summit ridge
of Bukit Serumbu. It is here that he made many important findings related to the forest in Bukit Serumbu.
In February 1855, Wallace wrote a paper entitled ‘On the Law which has Regulated the Introduction of New Species’, which
was published in the Annals and Magazine of Natural History in September that same year.
In the paper he discussed observations regarding the geographic and geologic distribution of both living and fossil species,
what would become known as biogeography.

His conclusion that “Every species has come into existence coincident both in space and time with a closely allied species” has
come to be known as the “Sarawak Law”.